/Engine/Source/Runtime/MovieScene/Public/MovieSceneClipboard.h
Find or add a key track. Key tracks are group primarily by MovieSceneTrack instance, then by name
A key track which can be populated with keys
template<typename KeyType> [FMovieSceneClipboardKeyTrack](API\Runtime\MovieScene\FMovieSceneClipboardKeyTrack) & FindOrAddKeyTrack ( [FName](API\Runtime\Core\UObject\FName) InName, [UMovieSceneTrack](API\Runtime\MovieScene\UMovieSceneTrack) & ParentTrack )